https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/v/approximating-square-roots-2 2021-05-12T18:47:50Z Approximating square roots Learn how to find the approximate values of square roots. The examples used in this video are √32, √55, and √123. The technique used is to compare the squares of whole numbers to the number we're taking the square root of. video https://cdn.kastatic.org/googleusercontent/NmLYBMoaznVDSduejltf5ryy8CyjNviXgwJ2L6F-NB-hv3CqGMedj9-VGIDHbQgLCOWoehN2o_hS3WLUiAz7FeO0JA Approximating square roots Learn how to find the approximate values of square roots. The examples used in this video are √32, √55, and √123. The technique used is to compare the squares of whole numbers to the number we're taking the square root of. https://cdn.kastatic.org/ka-youtube-converted/Lh7NMBPFVZw.mp4/Lh7NMBPFVZw.mp4 288 Aproximar números irracionales https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/a/approximating-square-roots-guided-practice 2021-04-29T07:53:21Z Approximating square roots walk through Walk through a series of questions and examples that will help you learn how to approximate square roots. article https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/e/square_roots_2 2026-03-24T23:41:07.080866137Z Approximating square roots Practice finding the approximate value of square roots by thinking about perfect squares. Christi Rockwell exercise https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/v/sorting-irrational-numbers-involving-radicals 2021-05-12T18:47:50Z Comparing irrational numbers with radicals Learn how to sort a bunch of numbers (4√2  2√3  3√2  √17  3√3  5) from least to greatest without using a calculator. video https://cdn.kastatic.org/googleusercontent/set5jNhXaLVZ8YMiR9UBSBE39gzy23fl_UL7ikqM1wZyoJ3Jw4MwuLCXjY8VKXhIbAwDTstiFI858sITbfrhn3M Comparing irrational numbers with radicals Learn how to sort a bunch of numbers (4√2  2√3  3√2  √17  3√3  5) from least to greatest without using a calculator. https://cdn.kastatic.org/ka-youtube-converted/KibTbfkoPTs.mp4/KibTbfkoPTs.mp4 329 Aproximar números irracionales https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/e/approximating-irrational-numbers-without-a-calculator 2026-04-08T00:36:09.500768563Z Comparing irrational numbers Practice comparing irrational numbers without using a calculator. Ben exercise https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/v/approximating-square-roots 2023-08-07T13:58:57.555381582Z Approximating square roots to hundredths Let's approximate the square root of 45 without a calculator. We'll explore how to find the perfect squares around 45 and use them to make an educated guess. Then, we'll refine our guess by squaring it to see how close we get to 45. Sal Khan video https://cdn.kastatic.org/googleusercontent/rvgxpjyAgpy4kH7bCczmcV-3voQXbrAZ7pWpZ9JezFxBJA4E3YXCRWppeDapawBmuhhANH-bUUdKq3_Twos3Je_vdQ Approximating square roots to hundredths Let's approximate the square root of 45 without a calculator. We'll explore how to find the perfect squares around 45 and use them to make an educated guess. Then, we'll refine our guess by squaring it to see how close we get to 45. https://cdn.kastatic.org/ka-youtube-converted/EFVrAk61xjE.mp4/EFVrAk61xjE.mp4 432 Aproximar números irracionales https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/v/comparing-values-with-calculator 2023-09-29T20:10:37.268517027Z Comparing values with calculator Let's use the technique of squaring to compare values. We first compare 22.9% to an arbitrary value, 0.3, and then square 0.3 to compare it to the square root of 0.45. This helps us understand which value is larger without needing a calculator. video https://cdn.kastatic.org/googleusercontent/Lgndrfr3WLqGmwL_8TiWG6sqzWU1GKqaf22qVeB7Tu3Xee0iiBwirp49RtMbIi-rwgPcjl3LhAcQc7VLk-RabeW4 Comparing values with calculator Let's use the technique of squaring to compare values. We first compare 22.9% to an arbitrary value, 0.3, and then square 0.3 to compare it to the square root of 0.45. This helps us understand which value is larger without needing a calculator. https://cdn.kastatic.org/ka-youtube-converted/PuRsXST9EZU.mp4/PuRsXST9EZU.mp4 241 Aproximar números irracionales https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/e/approximating-irrational-numbers 2026-04-08T00:36:09.500768563Z Comparing irrational numbers with a calculator Practice using a calculator to find the approximate decimal values of irrational numbers. Rhonda Hughes exercise